diff --git a/core/plug-in/echo/Echo.cpp b/core/plug-in/echo/Echo.cpp
index 178a4f5a..f0a38d06 100644
--- a/core/plug-in/echo/Echo.cpp
+++ b/core/plug-in/echo/Echo.cpp
@@ -93,7 +93,7 @@ AmSession* EchoFactory::onInvite(const AmSipRequest& req)
 }
 
 EchoDialog::EchoDialog() 
-  : playout_type(SIMPLE_PLAYOUT)
+  : playout_type(ADAPTIVE_PLAYOUT)
 {
 	
 }